| 摘要 |
In the DC-motor control system including an unit-power wupplier(p.u.s), a transmitting station(10), and a receiving station(11) , a pair of conductor(12) is connected between the transmitting station and the receiving station(11), and the motor is connected to the receiving station(11). The p.u.s is operated by 240volt, 50Hz main-supplier for home use, and supplies AC 20volt with the power line(13). In the receiving station, the presence of the second wave-from is detected, and in the meantime of detecting the second wave-form, AC wave-form is supplied with DC device.
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